"When you read John's excellent book you will see what it took for the famous boxing champions of the past and present including Calzaghe, Chaves, Corbett, De La Hoya, Dempsey, Fitzsimmons, Frazier, Holmes, Jeffries, Johnson, Lewis, Liston, Marciano, Ortiz, Patterson, Tunney and Tyson to name only a few, and not forgetting the greatest of them all, the magnificent Muhammed Ali, to get to the top of their chosen profession. Enjoy the book, it's a knockout!" Barry McGuigan, MBE